package com.lei.huawei;

import java.util.Scanner;

/**
 * @author: leiGer
 * @Date: 2022/02/22
 * @Time: 22:10
 */
public class NiKeSi {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()){
            int n = scanner.nextInt();
            long sum = (long) Math.pow(n,3);
            int a1 = (int) (sum/n -n + 1);
            StringBuilder sb = new StringBuilder(Integer.toString(a1));
            for (int i = 1; i < n; i++) {
                a1 = a1 + 2;
                sb.append("+");
                sb.append(a1);

            }
            System.out.println(sb);


        }
        scanner.close();
    }
}
